I'm just not sure how there is no punishment for players abusing the gameplay and greifing players with this garbage when it's clearly documented as well as proven they are doing this to target specific players over and over again until they leave.
Assuming he is not signing into multiple accounts simultaneously in different countries to track an enemy players position ( a clear rule violation), what in all you listed is an actual actionable HTC rule violation?
Can he not check the stats page?
Can he not look at the roster?
Can he not ask a countryman who just showed having gotten killed by you on PM or country channel where he was when You killed his countryman?
Can he not decide to fly there?
Can he not engage any enemy planes there he chooses?
Bragging isn't a violation. If he was calling you obscene names on 200 it would be.
Exactly what is it you want enforced against Skyyr, and how would it be workable?